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          <h1 class="title">
            <span class="kind">class</span> Maps
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          <li><a href="dart-collection/Maps-class.html#static-methods">Static Methods</a></li>
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      <p>Helper class which implements complex <a href="dart-core/Map-class.html">Map</a> operations
in term of basic ones (<a href="dart-core/Map/keys.html">Map.keys</a>, <code>Map.operator []</code>,
<code>Map.operator []=</code> and <a href="dart-core/Map/remove.html">Map.remove</a>.)  Not all methods are
necessary to implement each particular operation.</p>
    </section>
    



    <section class="summary offset-anchor" id="static-methods">
      <h2>Static Methods</h2>
      <dl class="callables">
        <dt id="clear" class="callable">
          <span class="name"><a href="dart-collection/Maps/clear.html">clear</a></span><span class="signature">(<wbr><span class="parameter" id="clear-param-map"><span class="type-annotation"><a href="dart-core/Map-class.html">Map</a></span> <span class="parameter-name">map</span></span>)
            <span class="returntype parameter">&#8594; dynamic</span>
          </span>
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        <dd>
          <p></p>
        </dd>
        <dt id="containsKey" class="callable">
          <span class="name"><a href="dart-collection/Maps/containsKey.html">containsKey</a></span><span class="signature">(<wbr><span class="parameter" id="containsKey-param-map"><span class="type-annotation"><a href="dart-core/Map-class.html">Map</a></span> <span class="parameter-name">map</span>, </span> <span class="parameter" id="containsKey-param-key"><span class="type-annotation"><a href="dart-core/Object-class.html">Object</a></span> <span class="parameter-name">key</span></span>)
            <span class="returntype parameter">&#8594; <a href="dart-core/bool-class.html">bool</a></span>
          </span>
        </dt>
        <dd>
          <p></p>
        </dd>
        <dt id="containsValue" class="callable">
          <span class="name"><a href="dart-collection/Maps/containsValue.html">containsValue</a></span><span class="signature">(<wbr><span class="parameter" id="containsValue-param-map"><span class="type-annotation"><a href="dart-core/Map-class.html">Map</a></span> <span class="parameter-name">map</span>, </span> <span class="parameter" id="containsValue-param-value"><span class="type-annotation"><a href="dart-core/Object-class.html">Object</a></span> <span class="parameter-name">value</span></span>)
            <span class="returntype parameter">&#8594; <a href="dart-core/bool-class.html">bool</a></span>
          </span>
        </dt>
        <dd>
          <p></p>
        </dd>
        <dt id="forEach" class="callable">
          <span class="name"><a href="dart-collection/Maps/forEach.html">forEach</a></span><span class="signature">(<wbr><span class="parameter" id="forEach-param-map"><span class="type-annotation"><a href="dart-core/Map-class.html">Map</a></span> <span class="parameter-name">map</span>, </span> <span class="parameter" id="forEach-param-f"><span class="type-annotation">void</span> <span class="parameter-name">f</span>(<span class="parameter" id="f-param-key"><span class="parameter-name">key</span>, </span> <span class="parameter" id="f-param-value"><span class="parameter-name">value</span></span>)</span>)
            <span class="returntype parameter">&#8594; dynamic</span>
          </span>
        </dt>
        <dd>
          <p></p>
        </dd>
        <dt id="getValues" class="callable">
          <span class="name"><a href="dart-collection/Maps/getValues.html">getValues</a></span><span class="signature">(<wbr><span class="parameter" id="getValues-param-map"><span class="type-annotation"><a href="dart-core/Map-class.html">Map</a></span> <span class="parameter-name">map</span></span>)
            <span class="returntype parameter">&#8594; <a href="dart-core/Iterable-class.html">Iterable</a></span>
          </span>
        </dt>
        <dd>
          <p></p>
        </dd>
        <dt id="isEmpty" class="callable">
          <span class="name"><a href="dart-collection/Maps/isEmpty.html">isEmpty</a></span><span class="signature">(<wbr><span class="parameter" id="isEmpty-param-map"><span class="type-annotation"><a href="dart-core/Map-class.html">Map</a></span> <span class="parameter-name">map</span></span>)
            <span class="returntype parameter">&#8594; <a href="dart-core/bool-class.html">bool</a></span>
          </span>
        </dt>
        <dd>
          <p></p>
        </dd>
        <dt id="isNotEmpty" class="callable">
          <span class="name"><a href="dart-collection/Maps/isNotEmpty.html">isNotEmpty</a></span><span class="signature">(<wbr><span class="parameter" id="isNotEmpty-param-map"><span class="type-annotation"><a href="dart-core/Map-class.html">Map</a></span> <span class="parameter-name">map</span></span>)
            <span class="returntype parameter">&#8594; <a href="dart-core/bool-class.html">bool</a></span>
          </span>
        </dt>
        <dd>
          <p></p>
        </dd>
        <dt id="length" class="callable">
          <span class="name"><a href="dart-collection/Maps/length.html">length</a></span><span class="signature">(<wbr><span class="parameter" id="length-param-map"><span class="type-annotation"><a href="dart-core/Map-class.html">Map</a></span> <span class="parameter-name">map</span></span>)
            <span class="returntype parameter">&#8594; <a href="dart-core/int-class.html">int</a></span>
          </span>
        </dt>
        <dd>
          <p></p>
        </dd>
        <dt id="mapToString" class="callable">
          <span class="name"><a href="dart-collection/Maps/mapToString.html">mapToString</a></span><span class="signature">(<wbr><span class="parameter" id="mapToString-param-m"><span class="type-annotation"><a href="dart-core/Map-class.html">Map</a></span> <span class="parameter-name">m</span></span>)
            <span class="returntype parameter">&#8594; <a href="dart-core/String-class.html">String</a></span>
          </span>
        </dt>
        <dd>
          <p>Returns a string representing the specified map. The returned string
looks like this: <code>'{key0: value0, key1: value1, ... keyN: valueN}'</code>.
The value returned by its <a href="dart-core/Object/toString.html">toString</a> method is used to represent each
key or value.</p>
        </dd>
        <dt id="putIfAbsent" class="callable">
          <span class="name"><a href="dart-collection/Maps/putIfAbsent.html">putIfAbsent</a></span><span class="signature">(<wbr><span class="parameter" id="putIfAbsent-param-map"><span class="type-annotation"><a href="dart-core/Map-class.html">Map</a></span> <span class="parameter-name">map</span>, </span> <span class="parameter" id="putIfAbsent-param-key"><span class="parameter-name">key</span>, </span> <span class="parameter" id="putIfAbsent-param-ifAbsent"><span class="type-annotation">dynamic</span> <span class="parameter-name">ifAbsent</span>()</span>)
            <span class="returntype parameter">&#8594; dynamic</span>
          </span>
        </dt>
        <dd>
          <p></p>
        </dd>
      </dl>
    </section>

    <section class="summary offset-anchor" id="constructors">
      <h2>Constructors</h2>

      <dl class="constructor-summary-list">
        <dt id="Maps" class="callable">
          <span class="name"><a href="dart-collection/Maps/Maps.html">Maps</a></span><span class="signature">()</span>
        </dt>
        <dd>
          <p></p>
        </dd>
      </dl>
    </section>

    <section class="summary offset-anchor inherited" id="instance-properties">
      <h2>Properties</h2>

      <dl class="properties">
        <dt id="hashCode" class="property inherited">
          <span class="name"><a href="dart-core/Object/hashCode.html">hashCode</a></span>
          <span class="signature">&#8594; <a href="dart-core/int-class.html">int</a></span>
        </dt>
        <dd class="inherited">
          <p>Get a hash code for this object.</p>
          <div class="features">
    read-only, inherited
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</dd>
        <dt id="runtimeType" class="property inherited">
          <span class="name"><a href="dart-core/Object/runtimeType.html">runtimeType</a></span>
          <span class="signature">&#8594; <a href="dart-core/Type-class.html">Type</a></span>
        </dt>
        <dd class="inherited">
          <p>A representation of the runtime type of the object.</p>
          <div class="features">
    read-only, inherited
  </div>
</dd>
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    </section>

    <section class="summary offset-anchor inherited" id="operators">
      <h2>Operators</h2>
      <dl class="callables">
        <dt id="operator ==" class="callable inherited">
          <span class="name"><a href="dart-core/Object/operator_equals.html">operator ==</a></span><span class="signature">(<wbr><span class="parameter" id="==-param-other"><span class="parameter-name">other</span></span>)
            <span class="returntype parameter">&#8594; <a href="dart-core/bool-class.html">bool</a></span>
          </span>
        </dt>
        <dd class="inherited">
          <p>The equality operator.</p>
          <div class="features">inherited</div>
        </dd>
      </dl>
    </section>

    <section class="summary offset-anchor inherited" id="instance-methods">
      <h2>Methods</h2>
      <dl class="callables">
        <dt id="noSuchMethod" class="callable inherited">
          <span class="name"><a href="dart-core/Object/noSuchMethod.html">noSuchMethod</a></span><span class="signature">(<wbr><span class="parameter" id="noSuchMethod-param-invocation"><span class="type-annotation"><a href="dart-core/Invocation-class.html">Invocation</a></span> <span class="parameter-name">invocation</span></span>)
            <span class="returntype parameter">&#8594; dynamic</span>
          </span>
        </dt>
        <dd class="inherited">
          <p>Invoked when a non-existent method or property is accessed.</p>
          <div class="features">inherited</div>
        </dd>
        <dt id="toString" class="callable inherited">
          <span class="name"><a href="dart-core/Object/toString.html">toString</a></span><span class="signature">(<wbr>)
            <span class="returntype parameter">&#8594; <a href="dart-core/String-class.html">String</a></span>
          </span>
        </dt>
        <dd class="inherited">
          <p>Returns a string representation of this object.</p>
          <div class="features">inherited</div>
        </dd>
      </dl>
    </section>

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    <h5>Maps</h5>
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      <li class="section-title"><a href="dart-collection/Maps-class.html#static-methods">Static methods</a></li>
      <li><a href="dart-collection/Maps/clear.html">clear</a></li>
      <li><a href="dart-collection/Maps/containsKey.html">containsKey</a></li>
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      <li><a href="dart-collection/Maps/forEach.html">forEach</a></li>
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      <li><a href="dart-collection/Maps/isNotEmpty.html">isNotEmpty</a></li>
      <li><a href="dart-collection/Maps/length.html">length</a></li>
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      <li><a href="dart-collection/Maps/putIfAbsent.html">putIfAbsent</a></li>
    
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      <li><a href="dart-collection/Maps/Maps.html">Maps</a></li>
    
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        <a href="dart-collection/Maps-class.html#instance-properties">Properties</a>
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      <li class="inherited"><a href="dart-core/Object/runtimeType.html">runtimeType</a></li>
    
      <li class="section-title inherited"><a href="dart-collection/Maps-class.html#operators">Operators</a></li>
      <li class="inherited"><a href="dart-core/Object/operator_equals.html">operator ==</a></li>
    
      <li class="section-title inherited"><a href="dart-collection/Maps-class.html#instance-methods">Methods</a></li>
      <li class="inherited"><a href="dart-core/Object/noSuchMethod.html">noSuchMethod</a></li>
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